Residents of Cedar Glen Apartments came home Tuesday, a day after an 11-hour standoff between a resident and police during which a Norwich officer was shot.

Jason Razzino, 30, who lived on the third floor of Building D, was found dead on his bathroom floor, state police spokesman J. Paul Vance said in a news release. The cause of death was a single self-inflicted bullet wound.

Neighbor Pam Norman said she knew Razzino by sight but not much else about him. He had been in the building four or five months, she said, and lived with a woman.

Police said Razzino was alone in the apartment when he was found.

“We really didn’t know them,” Norman said. “It was a neighbor thing, saying hi when we passed, that sort of thing. He was always coming out to smoke cigarettes.”

“The incident’s over, but much work remains,” Norwich Police Chief Louis Fusaro said at a press conference Tuesday. Fusaro said the state police Major Crime Squad was continuing to investigate the shooting and standoff.

The state police will work to “answer all the questions about how and why this occurred,” Vance said.

The standoff began at 2:44 p.m. Monday when Norwich police responded to the Cedar Glen Apartments, a four-building complex off Cedar Street, for a reported suicidal man armed with a weapon.

Razzino began firing at Norwich officers using a rifle and pistol, Vance said. Norwich police then summoned the state police for help, and more and more police began gathering in the Jail Hill neighborhood around the complex.

Shortly after 3 p.m., police began evacuating nearby residents.

Each of the brick apartment buildings at Cedar Glen are three stories tall. Apartment doors on the second and third floors open onto balconies running the building’s length. Upper floors are reached by enclosed stairs at each end that open onto the outside of the balconies. Razzino’s apartment is an end one, its door facing Cedar Street.

Five members of the Norman family, who occupy two apartments in Building D, left their homes about 3:30 p.m., Taha Norman said, after a visit from a heavily armored police officer.

Janet Janssen, who lives in Building C, left about 5 p.m. for a shelter set up by the Red Cross at Kelly Middle School. While leaving, she saw a police officer methodically removing the covers of lights outside the apartment doors on her floor and smashing the bulbs with a baton.

She left the shelter to return home early Tuesday morning after the standoff ended.

He then heard 30 to 40 shots fired in rapid succession. He then saw police carrying a wounded Ley out the bottom of the stairs and laying him on the ground.

Police returned fire but didn’t hit Razzino, Vance said.

Taha Norman said Razzino fired at the officers from his kitchen window. She said she became so upset at the sight of the injured Ley that she had a seizure. She had to be taken to The William W. Backus Hospital. She recovered and rejoined her family a few hours later.

Ley also was taken to Backus and then airlifted to Yale-New Haven, police said.

No more shots were fired at police after that fusillade.

More police arrived as night fell. Troopers from Troop E in Montville, the Major Crime Squad and the east and west tactical teams came to the scene, Vance said. The tactical teams, dressed in camouflage fatigues, helmets and body armor, were used after negotiations over the telephone with Razzino failed, Vance said.

After several hours of waiting, a tactical team, using specialized equipment, entered the apartment and found Razzino’s body, police said.

Vance said he didn’t know when police entered the apartment. Police began packing up their equipment and leaving the scene about 2:15 a.m., 11½ hours after the standoff began.

An hour or two later, police let residents of Buildings A, B and C go home. The Normans and other Building D residents weren’t so lucky. They had to leave Kelly at 7:30 a.m. Tuesday, but couldn’t return to their apartments.

Police told the Normans on Tuesday morning they probably could return at 5 or 6 p.m., Pam Norman said.